Power plant · Illinois, United States
Hennepin Power Station
Hennepin Power Station is a closed coal power plant in Illinois, United States, with 306 MW of capacity, operated by Dynegy Midwest Generation Inc.
Grid connection
It closed in 2019, which freed up a 306 MW grid connection at 138 kV to the grid of Ameren Illinois Company, unless it has been reassigned since.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Illinois | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Closed | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 1953 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| End year | 2019 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Dynegy Midwest Generation Inc | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 306 MW (nameplate of its retired generators) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Conventional Steam Coal | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Grid operator | Ameren Illinois Company | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Voltage | 138 kV | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 41.3028, -89.3150 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
Research on this power plant and its operator.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the operator.
Request researchHow it compares
Hennepin Power Station is the 38th-largest of 39 power plants in Illinois and the 881st-largest of 1,009 in the United States by capacity; its 306 MW is <0.1% of the 917,512 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Illinois | 38th of 39 | 40,106 MW | 0.76% |
| United States | 881st of 1,009 | 917,512 MW | <0.1% |
| All power plants in our data | 1,595th of 15,799 | 1,918,113 MW | <0.1% |
Timeline
Dated facts about this power plant from its sources, oldest first.
- Started operating
- Retired
Nearby
Within 50 km of this power plant: 8 mines (5 operating), measured from the coordinates in the facts above. The table shows the nearest 3.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Utica Silica | Mine | — | Closed | 26 km |
| Utica Plant | Mine | — | Closed | 26 km |
| Troy Grove Plant | Mine | — | Operating | 26 km |
Operator, grid operator and place
More from Dynegy Midwest Generation Inc
- Baldwin Energy Complex1,260 MW
- Havana718 MW
- Wood River650 MW
Other power plants in Illinois
- Braidwood Generation Station2,450 MW
- Byron Generating Station2,450 MW
- LaSalle Generating Station2,340 MW
- Dresden Generating Station2,019 MW
- Quad Cities Generating Station2,019 MW
- Powerton1,786 MW
- Prairie State Generating Station1,766 MW
- Joliet 291,320 MW
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DUKES 5.11: Power stations in the United Kingdom, Open Government Licence v3.0.
- Contains public sector information licensed under the Open Government Licence v3.0. DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- JRC Open Power Plants Database (JRC-PPDB-OPEN), European Commission, Joint Research Centre. JRC Open Power Plants Database (JRC-PPDB-OPEN), CC BY 4.0.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- Dutch power station owners' and operators' pages. Dutch power station owners' and operators' pages, Facts only, each linked to its page.
- Contains public sector information licensed under the Open Government Licence v3.0. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.
- Wikidata. Wikidata, CC0 1.0.